H2020Индивидуална стипендия2016–2018

VoidTrap · Advanced studies of trapping and rotation of nanoparticles in vacuum

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2016-03-01 → 2018-02-28
Финансиране от ЕС: 195 455 €
Участници: 1
Схема: MSCA-IF-EF-ST

Линиите свързват координатора с партньорите.

Накратко на български

Оптичните влакна се използват за улавяне и охлаждане на наночастици във вакуум. Това помага да се наблюдава квантовото поведение на обекти от милиони атома, за да се разбере разликата между класическата и квантовата физика.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Advanced studies of trapping and rotation of nanoparticles in vacuum

The proposal originated as a project to explore optical fibres as a future experimental platform for studying quantum phenomena with mesoscopic particles. While quantum states of atoms and small molecules have been extensively studied, an important and yet unachieved goal of quantum physics is to observe quantum behaviour for large object consisting of millions of atoms. And yet, such observations could bridge the gap between classical and quantum worlds, which is a holy grail of modern quantum physics. As an example, building quantum computing systems requires maintaining many particles in well-defined quantum states simultaneously. One potential path towards this goal is to use optical levitation of such mesoscopic object, which allows to cool it optically and bring it to quantum state, and to remove the interaction with the surroundings by putting it in vacuum. We initially proposed that specialized micro-structured optical fibres which can provide a very tight optical trap for efficient optical cooling, and also allow for simpler and cleaner experimental conditions and cleaner vacuum, which would allow a step towards reaching the quantum state. In line with the initial proposal, the action resulted in a substantial advancement of the field of optical trapping with fibres, and major milestones have been achieved. Additionally, the technical expertise acquired by the fellow on wavefront control of light to deliver controlled fibre outputs, as a part of the project, has brought additional important results for the broader optical community. The MCSA fellow has developed strong independence and both deepened and broadened his expertise in light shaping, complex media photonics, optical trapping and computation microscopy. This work has so far resulted in 2 peer-reviewed articles, 1 conference proceedings and has been disseminated for broad audience on multiple international conferences and seminars, including invited and plenary talks (UK, France, Japan, Australia, US). We systematically acknowledged the EU funding on every occasion, and we ensured open access to the publications.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

The aim of this proposal is to explore new and innovative routes to confine and cool trapped microparticles in vacuum. The elegance of trapping such microparticles in vacuum arises from the absence of any physical contact with the environment leading to any routes of dissipation. The challenge is to hold such particles in strong, highly localised traps, cool them and explore physics at the classical-quantum boundary.The present proposal aims to address these issues with a number of clear routes to address acknowledged bottlenecks in the field. (i) Firstly the use of light propagation in complex media (such as a multimode fibre) combined with vacuum studies leads to an innovative route for trapping, confining and addressing microparticles in complex vacuum systems without the need for ‘bulk’ microscope objectives or conventional optics. This also facilitates trapping in such geometries and creating with ease loading and 'science' chambers for the proposed research. (ii) A further advance will be the use of nanostructures such as double nanohole arrays for trapping that, due to their strong light confinement lead to ultra-high trap stiffnesses. In turn this means the very high resultant oscillator frequency reduces the cooling needed to achieve the quantum ground state. (iii) Finally a third strand will look at loading antireflection coated particles into such traps. This can result in trap stiffnesses up to one to two orders of magnitude higher than currently seen, again allowing cooling to the ground state.These ideas are disruptive and unconventional and unique to the applicant and host institute to the best of our knowledge. They will result in a step change in the field and internationally leading results. In addition the programme will allow a comprehensive and positive training package for the applicant as a basis for his future career in academia.

Оригинален текст от CORDIS (на английски).

Участници

THE UNIVERSITY COURT OF THE UNIVERSITY OF ST ANDREWS · ST ANDREWSКоординаторОбединеното кралство